Binding post unit



July 26, 1960 H. N. ISAXTON BINDING POST UNIT Filed March 28, 1957INVENTOR. How/1130 N. SAxroN.

, 2,945,919 BINDINGPOST UNIT Filed Mar. 28, 1957, Se!- Not 649,tl90 1Claim. Cl. 339-453 invention relates to a binding post unit adaptedfor'use with and upon electrical apparatus and instruments for securingwire leads and the'lilce tocircuit terminals. v v

In modern day testing and manufacturing of electrical equipment, it isexceedingly imperative to have troublefree, quick "acting and diminutivebinding posts in the various applications for these units. Most of thepresent day binding post units are of a rather complex manufacture,necessitating high initial costs and further, due to their inherentgeometry, have considerable waste space attendant their construction.These factors all aid in makingpresent day units rather expensive ininitial cost and replacement cost and at times due to their inherentgeometry, have considerable waste space attend ant their construction.These factors all aid in making present day units rather expensive ininitial cost and replacement cost and at times due to their inherentcomplexity cause malfunctions which often necessitate replacement of theunit. This, of'course, requires additional time, further outlay of moneyfor additional units, and, in general economic loss attendant thereto.

The present invention seeks to overcome many of these difiiculties byproviding a greatly improved binding post unit, which, because of itssimplicity, establishes reliability. Further, the inventive binding postunit is one which utilizes the maximum space. allocations in the mostbeneficial manner to achieve the greatest utility in attaining its primepurpose, namely that of holding or binding leads or the like securely.

The instant invention includes a plunger member which has a cylindricalrod element. On at least one end of the rod element is mounted acylindrical disk element. The outer curved surfaces of these twoelements are positioned in substantially longitudinal alignment so thata portion of the longitudinal outer surface of each of the elements liesin a common plane. The result is to have the disk element eccentricallymounted on the rod element with the outer surfaces thereof having aportion in planar longitudinal alignment.

A cylindrical housing is provided to journal therein the disk element,and to permit protrusion through one end oi the housing of the rodelement in journaling relation with the housing. Intermediate theopposite end of the housing and the disk element is positioned 'aresilient means capable of holding the disk element against the one endof the housing through which the rod is journaled. The housing has,additionally, a generally transversely positioned receiving slot formedtherethrou'gh, which, together with the disk element may cooperate tofonn a receiving opening for a wire lead, or the like,

when the disk element is urged against the resilient mem ber. Release ofthe disk element will cause, under the influence of the resilientmember, the lead tobe firmly bound to the housing by the disk element.

In addition to the aforementioned objects and advantages, it is anobject of this invention to provide a simple and trouble-free bindingpost unit.

It is another object of this invention to provide a bind- United Statespatfifif Patented July 26, 1960':

I binding post unit which is highly adaptable for utiliza-.

tion in present day miniaturization practices. V Objectsand advantagesother than those set forth above will be apparent when read inconnection with the accompanying drawings and specification, in which:

Figure l is a view in perspective of a binding post unit embodying theinvention;

Figure 2 is a view in perspective of the plunger mem ber ofFigure 1;Figure 3 is a reduced exploded view of the invention as shown inFigure 1. Shown in Figure 1 is a generally cylindrical housing 10 whichhas journaledtherein a. plunger memberll" shown in detail in Figure 2.Plunger member 1 1 and housing 10 have interposed therebetween aresilient means 12. It should be realized that the resilient means 12shown in the instant embodiment is exemplary and while any known meanssuch as rubber, plastic, metallic, liquid, gaseous or the like,resilient means may be utilized, the embodiment shows a metallic springas an example.

The housing 10 may, if desired, be part of a substantially unitary bodymember 14 which includes housing 10 and a shank portion 15. Shankportion 15 may include adjacent the housing member, a knurled section16, and adjacent its terminus, a reduced diameter section 17. Knurledsection 16 may be utilized to fasten the unit to another structure, and,the reduced diameter section 17 may be used to permit the attachment ofleads, clips or the like for electrical connection of the same with theunit.

The housing 10 may preferably have formed therethrough in a generallytransverse position a receiving slot 20. Into this receiving slot 29will be placed the desired leads to be bound to the unit. The housing10, which may be made by evacuating a portion of its interior may beclosed at the end through which it is evacuated or drilled by a capportion 21.

Plunger member 11 includes preferably a cylindrical rod element 22, andon at least one end thereof a cylindrical disk element 23. While in theinstant embodiment the rod element 22 and disk element 23 have beenshown as cylindrical, this showing is exemplary only and clearly doesnot exclude from the invention any other desired shapes such asrectangular, triangular and the like. There may be placed on theopposite extremity of rod element 22 another disk element 24 to aid auser in manual depression of plunger member 11 against the resilientmeans 12. To effectuate the objects of this invention, plunger member 11has its disk elements 23, 2'4 eccentrically mounted on the rod element.The rod element 22 which has an outer curved surface 26, and

j the disk elements 23, 24 which have outer curved surfaces 27, 28, areso positioned upon the rod element 22 as to align the outer surfaces 27,28 with the surface 26 in planar longitudinal alignment. This, ineffect, the area within the housing member which must be utilized by theplunger member for its operation and permits the maximum use of theremaining displacement the housing member to be utilized by thereceiving slot 20 for introduction thereinto of the desired wire lead orthe like.

In operation, the plunger member 1 1 may, by urging on disk element 24be depressed against resilient means 12 thereby moving disk element 23below the slot 20.

This permits introduction of a wire lead into slot 20. Release ofplunger member 11 will effect binding of'the Wirmleadito the slot- 20-by, disk element 23, thereby effecting both a mechanical and anelectrical binding of the lead to the binding post unit.

A particular embodiment; of the invention illustrated and. describedherein. iSi illustrated. only and. the invert-5 tion, includes. such:other modifications and= equivalents as may.- readilyappear. to. thoseskilledv in! thelart Within the scopesof.therappendeduclaim.

Lclaim:

The combination comprising; a tubular. housing having atransverselypositioned wire receiving; slot throughthe wall thereof;aecappositionedion theeendrof said housing, 1 said cap having anieccentrically positioned. hole therethrough; means a form forcing, awire-to. the end oi. said. slot, said means-comprising azunitarydisk-andplunger assembly positioned insa-id housing, said; disk: havingva peripheny slightly, smaller than the inner. erighery of said housingand being coaxial therewith+-wherer by. it may slide. freely. therein;and resilientmeans positioned in said housing forurgingtsaidadiskntowardi saidtcap and= forcingthe wire. to the=end0f'said=s1ot; and. means.v for. preventing rotation of said disk-Vandaplunger assembly, said! means comprising said plunger" projectingthrough said eccentric hole in said cap and being eccentricallypositioned with respectto said, diskand-h0using and being positioned sothat one surface thereof is in slidable contact with the inner surfaceof said housing-whereby movement of said disk-andplunger assemblyagainst the force of said resilient means away from said-slot permitsthe Wire to be inserted into said slot, andmovement of saiddisk-andplunger assembly diietosaid resilientmeans holds thewirerabtheendofrsaid SlOtm References Cited in the file of this patent-UNITED- STATES PATENTS 137,810 Wishart Apr. 15, 1873 821,029 Dow May 22,1906 1,437,103 Hengstenberg Nov. 28, 1922 1,438,264 Rygh Dec. 12, 19221,574g744' Aiken: Mar; 2, 1926 1','594,456- Conway" Aug. 3, 19261,660,807 Norgren" Feb. 28, 1928' 2,701,871 Ranch Feb. 8.4955

